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Home >> Chevrolet >> 2001 >> Cavalier Base, 4D Sedan, 2.4 T >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 2.2L & 2.4L >> Inspection/Maintenance Procedures >> Inspection/Maintenance Catalyst System Set Procedure >> Enable Criteria

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BARO is more than 72 kPa.
ECT is 167-257°F (75-125°C).
IAT is -4 to 176°F (-20 to 80°C).
Engine is in closed loop.
Engine has run 6-8 minutes off idle.
Battery voltage is 9-16 volts.

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